Her behavior must be the father's fault. See, after she chased him off with allegations of abuse, he hasn't been willing to jeapordize his own life's work and position, so he hasn't been around. Well, she got tired of the kid asking and begging incessantly to see his daddy again. Finally, she cracked.

Or...

Her lover insisted NO KIDS in his London vacation house. So, her sexual fantasies overrode her court-ordered privilege to raise the boy. Oh well, at least the boy got a good taste of feminism, and hopefully he will stay away from women like his mother.

Or he'll turn into jack the ripper and start slaughtering women at the drop of a hat! (worse case scenario).

Of course, no one here is going to find her guilty until proven innocent just because she is accused, are they. She says she didn't do it.

Let the evidence speak. Real, corroborated evidence and not imagination.